diff --git a/lib/shared/messages/add-members-message-spec.js b/lib/shared/messages/add-members-message-spec.js
--- a/lib/shared/messages/add-members-message-spec.js
+++ b/lib/shared/messages/add-members-message-spec.js
@@ -231,4 +231,9 @@
     messageInfo: AddMembersMessageInfo,
     params: ShowInMessagePreviewParams,
   ) => threadTypeIsThick(params.threadInfo.type),
+
+  getLastUpdatedTime: (
+    messageInfo: AddMembersMessageInfo | RawAddMembersMessageInfo,
+    params: ShowInMessagePreviewParams,
+  ) => (threadTypeIsThick(params.threadInfo.type) ? messageInfo.time : null),
 });
diff --git a/lib/shared/messages/join-thread-message-spec.js b/lib/shared/messages/join-thread-message-spec.js
--- a/lib/shared/messages/join-thread-message-spec.js
+++ b/lib/shared/messages/join-thread-message-spec.js
@@ -177,4 +177,9 @@
     messageInfo: JoinThreadMessageInfo,
     params: ShowInMessagePreviewParams,
   ) => threadTypeIsThick(params.threadInfo.type),
+
+  getLastUpdatedTime: (
+    messageInfo: JoinThreadMessageInfo | RawJoinThreadMessageInfo,
+    params: ShowInMessagePreviewParams,
+  ) => (threadTypeIsThick(params.threadInfo.type) ? messageInfo.time : null),
 });
diff --git a/lib/shared/messages/leave-thread-message-spec.js b/lib/shared/messages/leave-thread-message-spec.js
--- a/lib/shared/messages/leave-thread-message-spec.js
+++ b/lib/shared/messages/leave-thread-message-spec.js
@@ -177,4 +177,9 @@
     messageInfo: LeaveThreadMessageInfo,
     params: ShowInMessagePreviewParams,
   ) => threadTypeIsThick(params.threadInfo.type),
+
+  getLastUpdatedTime: (
+    messageInfo: LeaveThreadMessageInfo | RawLeaveThreadMessageInfo,
+    params: ShowInMessagePreviewParams,
+  ) => (threadTypeIsThick(params.threadInfo.type) ? messageInfo.time : null),
 });
diff --git a/lib/shared/messages/remove-members-message-spec.js b/lib/shared/messages/remove-members-message-spec.js
--- a/lib/shared/messages/remove-members-message-spec.js
+++ b/lib/shared/messages/remove-members-message-spec.js
@@ -237,5 +237,10 @@
       messageInfo: RemoveMembersMessageInfo,
       params: ShowInMessagePreviewParams,
     ) => threadTypeIsThick(params.threadInfo.type),
+
+    getLastUpdatedTime: (
+      messageInfo: RemoveMembersMessageInfo | RawRemoveMembersMessageInfo,
+      params: ShowInMessagePreviewParams,
+    ) => (threadTypeIsThick(params.threadInfo.type) ? messageInfo.time : null),
   },
 );